Definition of Nematoda
1. Noun. Unsegmented worms: roundworms; threadworms; eelworms.
Group relationships: Animal Kingdom, Animalia, Kingdom Animalia
Member holonyms: Helminth, Parasitic Worm, Aphasmidia, Class Aphasmidia, Class Phasmidia, Phasmidia, Nematode, Nematode Worm, Roundworm, Ascaridae, Family Ascaridae, Family Oxyuridae, Oxyuridae, Cephalobidae, Family Cephalobidae, Family Tylenchidae, Tylenchidae, Ancylostomatidae, Family Ancylostomatidae, Family Filariidae, Filariidae, Dracunculidae, Family Dracunculidae
Generic synonyms: Phylum
Medical Definition of Nematoda
1. A class of unsegmented helminths with fundamental bilateral symmetry and secondary triradiate symmetry of the oral and oesophageal structures. Many species are parasites. (12 Dec 1998)
Lexicographical Neighbors of Nematoda
Literary usage of Nematoda
Below you will find example usage of this term as found in modern and/or classical literature:
1. Text-book of the Embryology of Invertebrates by Eugen Korschelt, Karl Heider, Edward Laurens Mark, William McMichael Woodworth, Matilda Bernard, Martin Fountain Woodward (1895)
"... which is prolonged into the ventral cord, and they can be co-ordinated with them «.» fl separata division. What was said in considering the nematoda l ..."
2. The American Journal of the Medical Sciences by Southern Society for Clinical Investigation (U.S.) (1875)
"He gives some rude microscopical drawings of the ova found in the urine, and a sketch of two nematoda, which he claims to belong to a new species, ..."
3. A Manual of the Common Invertebrate Animals: Exclusive of Insects by Henry Sherring Pratt (1916)
"nematoda I,. Mouth and intestine degenerate; lateral lines absent 2. ... nematoda.• Threadworms (Fig. 344). Round, slender worms, usually white or flesh ..."
4. Zoology: An Elementary Text-book by Arthur Everett Shipley, Ernest William MacBride (1904)
"THE nematoda include a very great number of species commonly termed Thread-Worms, ... In the nematoda, in which all metabolism is at a low ebb, ..."
5. Forms of Animal Life: A Manual of Comparative Anatomy : with Descriptions of by George Rolleston, William Hatchett Jackson (1888)
"The greatest number of parasitic nematoda infest in the sexual state the various ... in the smaller nematoda, but in the larger becomes much thickened. ..."
6. A Treatise on Comparative Embryology by Francis Maitland Balfour (1885)
"The former becomes the ovary, the latter the testis. nematoda. In the nematoda the generative organs are derived from the division of a single cell which ..."